간단하게 정리하면 커맨드라인이나 파일을 통해 클래스 패스가 jvm에 전달되는 방식을 제어하는데 대부분의 os에선 최대 명령 줄 제한이 있어서 이 제한을 넘는 명령은 IDEA에서 실행 할 수 없기 때문에 명령이 32768 자 보다 길면 동적 클래스 패스로 전환 할 것을 제안하고 이 때 긴~ 클래스 패스는 파일에 기록된 다음, 응용 프로그램 관리자가 읽어서 시스템 클래스 로더를 통해 로드 된다는 것이다.
2021-05-0322:06:26.17018752-18752/com.jgji.memo E/AndroidRuntime: FATAL EXCEPTION: main Process: com.jgji.memo, PID: 18752 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jgji.memo/com.jgji.memo.MainActivity}: android.view.InflateException: Binary XML file line #33 in com.jgji.memo:layout/activity_main: Binary XML file line #33 in com.jgji.memo:layout/activity_main: Error inflating class Button at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3449) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java:7656) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) Caused by: android.view.InflateException: Binary XML file line #33 in com.jgji.memo:layout/activity_main: Binary XML file line #33 in com.jgji.memo:layout/activity_main: Error inflating class Button Caused by: android.view.InflateException: Binary XML file line #33 in com.jgji.memo:layout/activity_main: Error inflating class Button Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant). at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:243) at com.google.android.material.internal.ThemeEnforcement.checkAppCompatTheme(ThemeEnforcement.java:213) at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:148) at com.google.android.material.internal.ThemeEnforcement.obtainStyledAttributes(ThemeEnforcement.java:76) at com.google.android.material.button.MaterialButton.<init>(MaterialButton.java:229) at com.google.android.material.button.MaterialButton.<init>(MaterialButton.java:220) at com.google.android.material.theme.MaterialComponentsViewInflater.createButton(MaterialComponentsViewInflater.java:43) at androidx.appcompat.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:123) at androidx.appcompat.app.AppCompatDelegateImpl.createView(AppCompatDelegateImpl.java:1551) at androidx.appcompat.app.AppCompatDelegateImpl.onCreateView(AppCompatDelegateImpl.java:1602) at android.view.LayoutInflater.tryCreateView(LayoutInflater.java:1059) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:995) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:959) at android.view.LayoutInflater.rInflate(LayoutInflater.java:1121) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082) at android.view.LayoutInflater.inflate(LayoutInflater.java:680) at android.view.LayoutInflater.inflate(LayoutInflater.java:532) at android.view.LayoutInflater.inflate(LayoutInflater.java:479) at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:696) at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:170) at com.jgji.memo.MainActivity.onCreate(MainActivity.java:27) at android.app.Activity.performCreate(Activity.java:8000) at android.app.Activity.performCreate(Activity.java:7984) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)